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fromme-lab.bsky.social
Fromme Lab
@fromme-lab.bsky.social
We study how cells sort important stuff around their insides and to their outsides - Cornell University in beautiful Ithaca, NY
https://fromme.wicmb.cornell.edu
Sarah and the Cohen lab are doing amazing work!!!
Ithaca is gorge-ous! Thank you @fromme-lab.bsky.social, @jeremybaskin.bsky.social and colleagues for a very fun and stimulating visit to the Weill Institute for Cell and Molecular Biology at Cornell!
November 10, 2025 at 11:19 PM
Reposted by Fromme Lab
🎉 Huge congrats to Maya Schuldiner from the Weizmann Institute (Israel) for the 🏅 Otto Warburg Medal 2026!
Her work on how proteins find their way to organelles and how these organelles talk to each other has reshaped how we think about cells 🧬✨
#OWM #WeizmannInstitute @elsevierconnect.bsky.social
October 27, 2025 at 9:28 AM
Reposted by Fromme Lab
New preprint from Sean Munro @cellbiol-mrclmb.bsky.social! Golgi tether p115 directly binds Sec16A at ER exit sites. Mutations blocking this binding reduce secretion. A rich new mechanistic insight into physical coupling of ERES–ERGIC/Golgi.
www.biorxiv.org/content/10.1...
The Golgi vesicle tether p115/USO1 can bind directly to the ER exit site organiser Sec16A
Newly-made secretory and membrane proteins exit the endoplasmic reticulum (ER) in COPII vesicles that form at specialised ER exit sites. These exit sites are typically near to the early Golgi compartm...
www.biorxiv.org
October 17, 2025 at 7:36 AM
Reposted by Fromme Lab
Thanks to the Cornell Chronicle and @research-and-innovation.cornell.edu for highlighting our new small molecules targeting lipid-binding proteins in cancer! news.cornell.edu/stories/2025...
October 17, 2025 at 7:32 PM
Reposted by Fromme Lab
Attention membrane traffickers! I'm recruiting a post-doc to my lab in Dundee. We're dissecting the functions of intrinsically disordered domains of COPII coat proteins. We think they control timing of coat assembly and morphology of carriers.

www.dundee.ac.uk/work-for-us/...
Postdoctoral Research Assistant - MCDB - UOD2016
Closing date: Thursday 6 November 2025, 23:59
www.dundee.ac.uk
October 15, 2025 at 12:53 PM
Reposted by Fromme Lab
A while back we found that the lipid-binding protein PLEKHA4 boosts Wnt/β-catenin signaling and drives melanoma growth in vivo. Now, we (Nathan Frederick) identify small-molecule inhibitors of PLEKHA4 & related proteins with anticancer activity in vitro! pubs.acs.org/doi/10.1021/....
Discovery, Optimization, and Anticancer Activity of Lipid-Competitive Pleckstrin Homology Domain-Containing Family A Inhibitors
Phosphoinositide signaling is a major cellular mechanism controlling cancer cell viability, proliferation, and survival. Yet, inhibition of lipid kinases that produce oncogenic phosphoinositides has afforded only a limited number of efficacious drugs attributed in large part to on-target toxicity resulting from the pleiotropic effects of these signaling lipids. Targeting the specific phosphoinositide effector pathways via competitive inhibitors of phosphoinositide-recognizing pleckstrin homology (PH) domains represents a relatively unexplored means to achieve greater specificity. Herein, we present the discovery from in silico screening, structure–activity relationship (SAR) optimization, and cellular characterization of novel phosphoinositide-competitive inhibitors of the pleckstrin homology domain-containing A (PLEKHA) family. These compounds induce cytotoxic effects in BRAF and NRAS mutant melanoma cells, consistent with on-target inhibition, and the most potent compound is activated by endogenous esterase activity, suggesting that prodrug esters represent a viable strategy for targeting the phosphoinositide-binding pockets of the PLEKHA family of PH domains.
pubs.acs.org
October 7, 2025 at 4:06 PM
Reposted by Fromme Lab
The mechanistic basis of cargo selection during Golgi maturation. From Rebecca Taylor, @katciazynska.bsky.social, @jggkaufman.bsky.social & @grigorytagiltsev.bsky.social at @mpibiochem.bsky.social with David Owen and Sean Munro's group @cellbiol-mrclmb.bsky.social | www.science.org/doi/10.1126/...
The mechanistic basis of cargo selection during Golgi maturation
Resident proteins of the Golgi recycle in vesicles and the protein GOLPH3 enables the COPI vesicle coat to accomplish this.
www.science.org
October 6, 2025 at 11:39 AM
Reposted by Fromme Lab
How do cells sense & respond to lipid imbalances? What happens when a disease-relevant enzyme is blocked? Shiying Huang investigates phosphoinositide lipids with the Balla lab & discovers an integrated cellular response that boosts alternate lipid synthesis pathways! www.biorxiv.org/content/10.1...
October 3, 2025 at 1:03 PM
Reposted by Fromme Lab
Phosphatidylserine and RhoB connect phosphatidylinositol 4-phosphate and phosphatidic acid metabolism at the plasma membrane https://www.biorxiv.org/content/10.1101/2025.09.30.679611v1
October 2, 2025 at 11:30 PM
Reposted by Fromme Lab
Latest endosomal publication with @brettcollins.bsky.social: Rebeka Butkovic's beautiful work identifying a new Commander assembly, the RAB32-LRMDA-Commander, and its role in melanosome biogenesis. Reveals molecular mechanism of human oculocutaneous albinism type 7. www.nature.com/articles/s41...
Identification of a RAB32-LRMDA-Commander membrane trafficking complex reveals the molecular mechanism of human oculocutaneous albinism type 7
Nature Communications - Membrane trafficking is essential for organelle biogenesis. Here, the authors discover an alternative assembly of the Commander trafficking complex and show its role in...
www.nature.com
October 2, 2025 at 10:30 AM
Reposted by Fromme Lab
COPI-dependent intra-Golgi recycling at an intermediate stageof cisternal maturation https://www.biorxiv.org/content/10.1101/2025.09.20.677526v1
September 21, 2025 at 10:30 PM
Reposted by Fromme Lab
@weillinstitute.bsky.social
first Trainee Works in Progress Seminar of the fall semester with Mingqin Chang of @fromme-lab.bsky.social
September 17, 2025 at 8:31 PM
Reposted by Fromme Lab
Wonderful to see our paper on the #organelle signatures of #neurons and #astrocytes out in final form - congratulations, Shannon Rhoads and team!🎉 t.co/BPxKlbU6Ou
September 17, 2025 at 5:38 PM
Reposted by Fromme Lab
Dylan's study is now out in @jacs.acspublications.org! Key new experiments by Yuan-Ting Cho support a model for why a rare three-tailed lipid, NAPE, might accumulate during stroke & heart attack: as a protective response to promote lactate export as cells shift to glycolysis doi.org/10.1021/jacs...
September 5, 2025 at 12:23 PM
Reposted by Fromme Lab
Thrilled to share our newest publication in Science Advances!
We uncovered how two RabGEF complexes — Mon1-Ccz1 and Fuzzy-Inturned — adapt to regulate distinct Rab GTPases despite their structurally conserved catalytic core.
www.science.org/doi/full/10....
Mechanistic adaptation of the metazoan RabGEFs Mon1-Ccz1 and Fuzzy-Inturned
The molecular comparison of related RabGEFs reveals adaptation mechanisms of a functional module for specific cellular tasks.
www.science.org
September 2, 2025 at 8:02 PM
Reposted by Fromme Lab
New research from @roederlab.bsky.social: Plant cell wall mechanics inform how to grow usable forms news.cornell.edu/stories/2025...
Plant cell wall mechanics inform how to grow usable forms | Cornell Chronicle
Cornell scientists work toward engineering plants and other organisms to grow into usable, biodegradable forms.
news.cornell.edu
August 27, 2025 at 8:21 PM
Reposted by Fromme Lab
We are proud to announce our newest adventure!

Introducing the Diffuse Project, a community-driven effort to predict protein dynamics using the subtle diffuse scattering signal from protein crystals. This collaboration marks a new era for the Ando lab!

as.cornell.edu/news/philant...

🧪
🧬🧶
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Philanthropic support accelerates infrastructure for the future of structural biology
A new $5 million initiative, funded by the Astera Institute with experimental work conducted at the Cornell High Energy Synchrotron Source, aims to make diffuse scattering accessible to the public and...
as.cornell.edu
August 13, 2025 at 12:06 AM
Reposted by Fromme Lab
Very excited to announce that my first, first author paper, is now on BioRxiv! In this paper we unambiguously show #COPII coated vesicles in unperturbed human cells for the very first time!!

Make my day and check it out!
www.biorxiv.org/content/10.1...

#Cryo-ET #TeamTomo #Cryo-CLEM ❄️🔬❄️🔬❄️🔬❄️🔬
July 30, 2025 at 3:28 PM
Wow! GOLPH3 binding to COPI is competitive with binding of canonical -KKXX cargos, providing an elegant mechanism for differential sorting of COPI cargos during Golgi maturation. Congratulations to all the authors on an impressive and important study:

www.biorxiv.org/content/10.1...
June 27, 2025 at 11:12 AM
Our neighbors are the best!!!
Came in to this lovely surprise today — the lab is 10 years young this summer! 🍾

I’m so grateful to all trainees past and present for getting us to where we are and taking us to a bright and exciting future of #lipidtime #chembio discoveries!
June 26, 2025 at 12:38 AM
Reposted by Fromme Lab
I shall feast on the lipid remnants of my enemies and see their membranes ground to dust!!
May 5, 2025 at 3:27 PM